File Checksum Calculator Online Free
Calculate MD5, SHA-256, and SHA-512 checksums for any file. Client-side.
Files never uploadedInstant results100% freeWorks on mobile
How to Use
- 1Drop a file onto the upload area or click to browse and select a file.
- 2Wait for the checksums to be calculated (processing happens entirely in your browser).
- 3Copy any of the generated hashes (MD5, SHA-256, SHA-512) to your clipboard.
Frequently Asked Questions
What is a file checksum?
A checksum is a unique digital fingerprint of a file. If even one bit changes, the checksum changes. It's used to verify file integrity and detect corruption.
Are my files uploaded to a server?
No. All checksum calculations use the Web Crypto API and run entirely in your browser. Files never leave your device.
Which hash should I use?
SHA-256 is the recommended standard for most use cases. MD5 is faster but less secure. SHA-512 provides the strongest guarantees.
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